Effect of Fe-based Amorphous Flakes' Distribution on Electromagnetic Properties of Microwave Absorbers
Effect of Fe-based Amorphous Flakes' Distribution on Electromagnetic Properties of Microwave Absorbers
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发表时间：
2010
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通讯作者：
Zhou Shao-xiong
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作者：
Zhou Shao-xiong
采用水雾化和球磨法制备了Fe74Cr2Mo2Sn2P10Si4B4C2片状吸波材料。采用涂层法制备了片状取向分布的吸波材料，采用非涂层工艺制备了随机分布的片状吸波材料。讨论了取向对吸波材料电磁性能的影响。结果表明，片状取向分布吸波材料的复磁导率高于随机分布吸波材料，复介电常数明显低于随机分布吸波材料，取向分布吸波材料的复介电常数μ‘=20.1，e’=110，随机分布吸波材料的μ‘=14.4，e’=194。提出了取向度与磁导率的关系式，并与实验数据进行了比较。
Fe74Cr2Mo2Sn2P10Si4B4C2 flakes were prepared by water atomization and ball milling.The microwave absorbers of flakes oriented distributed were prepared by coating process and the random distributed ones were prepared by non-coating process.The effect of orientation on the electromagnetic properties was discussed.The results showed that the complex permeability of flakes oriented distributed absorbers is higher than that of random distributed ones,whereas the complex permittivity is much lower,μ'=20.1,e'=110 for oriented distributed absorbers and μ'=14.4,e'=194 for random distributed ones at frequency of 10 MHz.A relation between degree of orientation and permeability was proposed and agrees well with the experimental data.